Liquid crystal substrate glass multilateral detection device
By designing a multilateral detection device for glass in liquid crystal substrates, and using a visual capture system and a light projection mechanism to identify and alert polygon defects, the problem of difficulty in detecting polygon defects in the existing technology is solved, and efficient product identification and screening is achieved, avoiding losses in the production process.
Patent Information
- Application Number
- CN202421497265.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-06-27
AI Technical Summary
Existing LCD substrate glass inspection machines are difficult to detect polygon defects, resulting in products that are not discovered in time may enter the semi-finished product packaging, causing losses.
A multilateral detection device for liquid crystal substrate glass is designed, including a transmission station, a visual capture system, a lighting projection mechanism and a projection receiving mechanism. Through light projection and projection reception, the shape image of the liquid crystal substrate glass is captured and identified, the shadowed parts outside the boundary line of the rectangular area are identified, the alarm signal is sent and the board is automatically dropped.
It realizes efficient detection and identification of polygon defects of liquid crystal substrate glass, avoids losses caused by the product entering the semi-finished product packaging, and improves the reliability and efficiency of the production process.
Smart Images
Figure CN222931304U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal substrate glass production equipment, and particularly relates to a multi-sided detection device for liquid crystal substrate glass. Background Art
[0002] In the production process of liquid crystal substrate glass, it is necessary to longitudinally cut the glass at the semi-finished product process to remove the bait on both sides. When the cutting is defective, the glass may have incomplete irregular polygons on both sides.
[0003] However, the existing inspection machines can only detect glass missing blocks. When such semi-finished liquid crystal substrate glass passes through the inspection machine, it is usually impossible to determine the multi-sided shape. If the on-site operators do not discover the abnormality in time, the product may enter the semi-finished product packaging, resulting in broken plates and losses such as interruption of semi-finished product packaging. Content of the Utility Model
[0004] The purpose of the utility model is to provide a multi-sided detection device for liquid crystal substrate glass, aiming to solve the technical problems existing in the above-mentioned prior art. To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A multi-sided detection device for liquid crystal substrate glass includes a conveying station for conveying the liquid crystal substrate glass to be detected. A visual capture system is arranged on the top of the conveying station, a light projection mechanism is arranged behind the conveying station, and a projection receiving mechanism is arranged in front of the conveying station. The light projection mechanism projects the shape image of the liquid crystal substrate glass to be detected on the conveying station onto the projection receiving mechanism, and the visual capture system captures the shape image on the projection receiving mechanism.
[0006] As a further scheme of the utility model: The visual capture system includes a special-shaped bracket and a CCD camera. The special-shaped bracket is hung in the middle of the top of the conveying station, and the CCD camera is installed on the special-shaped bracket. The shooting end of the CCD camera faces the projection receiving mechanism.
[0007] As a further scheme of the utility model: The projection receiving mechanism includes a right-angled tripod and a curtain. The right-angled tripod is arranged in front of the conveying station, and the curtain is vertically laid on one side of the right-angled tripod. The curtain faces the conveying station.
[0008] As a further scheme of the utility model: The light projection mechanism includes a light door frame and a light source. The light door frame is arranged behind the conveying station, and the light source is arranged on the light door frame. The light of the light source passes through the space of the conveying station and is projected onto the curtain.
[0009] As a further solution of the present utility model: the light projection mechanism further includes a voltage stabilizer power supply and a cooling fan, the voltage stabilizer power supply is electrically connected to the light source, and the cooling fan is used to dissipate heat from the light source.
[0010] As a further solution of the present utility model: the light source is a xenon lamp.
[0011] As a further solution of the present utility model: it further includes a PLC controller and an alarm, and the PLC controller is communicatively connected to the vision capture system and the alarm.
[0012] The present utility model has the following beneficial effects:
[0013] In the present utility model, a vision capture system is arranged at the top of the conveying station, a light projection mechanism is arranged behind the conveying station, and a projection receiving mechanism is arranged in front of the conveying station. The light projection projects the shape image of the liquid crystal substrate glass to be detected on the conveying station onto the projection receiving mechanism in a positive projection manner. The vision capture system captures the shape image on the projection receiving mechanism. The vision capture system identifies a rectangular area with a fixed shape specification and sets the four side lines of the rectangle as boundary lines. Once a shadow part appears outside the boundary lines of the captured rectangular area, an alarm signal is sent to the PLC controller. When the PLC receives the alarm signal, it is considered that the liquid crystal substrate glass of the incoming material at this station is a multi-sided product, and an automatic board throwing operation can be performed at the board throwing station downstream of the conveying station, thereby completing the identification and screening of multi-sided products. Description of the Drawings
[0014] The following further describes the present utility model with reference to the accompanying drawings.
[0015] Figure 1 is a schematic structural diagram of a multi-sided detection device for liquid crystal substrate glass of the present utility model;
[0016] Figure 2 is a schematic combined structure diagram of a special-shaped bracket and a CCD camera of the present utility model.
[0017] In the figure: 1, conveying station; 2, special-shaped bracket; 3, CCD camera; 4, curtain; 5, right-angled tripod; 6, light door frame; 7, light source. Detailed Embodiments
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0019] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present utility model.
[0020] In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0021] Please refer to Figure 1 As shown, the present utility model provides a multi-sided detection device for liquid crystal substrate glass, including a transfer station 1 for conveying the liquid crystal substrate glass to be detected. The liquid crystal substrate glass to be detected is conveyed to the middle of the transfer station 1. A visual capture system is arranged on the top of the transfer station 1, a light projection mechanism is arranged behind the transfer station 1, and a projection receiving mechanism is arranged in front of the transfer station 1. The light projection mechanism projects the shape image of the liquid crystal substrate glass to be detected on the transfer station 1 onto the projection receiving mechanism. The visual capture system captures the shape image on the projection receiving mechanism. The visual capture system can be set to identify a rectangular area with a fixed shape specification and set the four side lines of the rectangle as boundary lines. If a shadow appears outside the boundary line of the rectangular area, an alarm signal is sent.
[0022] Please refer to Figure 2 As shown, in this embodiment, the visual capture system includes a special-shaped bracket 2 and a CCD camera 3. The special-shaped bracket 2 is hung in the middle of the top of the transfer station 1, the CCD camera 3 is installed on the special-shaped bracket 2, and the shooting end of the CCD camera 3 faces the projection receiving mechanism. The projection receiving mechanism includes a right-angled tripod 5 and a curtain 4. The right-angled tripod 5 is arranged in front of the transfer station 1, the curtain 4 is vertically laid on one side of the right-angled tripod 5, and the curtain 4 faces the transfer station 1. The light projection mechanism includes a light door frame 6 and a light source 7. The light door frame 6 is arranged behind the transfer station 1, the light source 7 is arranged on the light door frame 6, and the light of the light source 7 passes through the space of the transfer station 1 and is projected onto the curtain 4. The light projection mechanism also includes a regulated power supply and a cooling fan. The regulated power supply is electrically connected to the light source 7, the regulated power supply provides stable electric energy for the light source 7, the cooling fan is used to dissipate heat for the light source 7, and the light source 7 is preferably a xenon lamp.
[0023] It should be noted that the present utility model further includes a PLC controller and an alarm. The PLC controller is communicatively connected to the vision capture system and the alarm. This is prior art and will not be elaborated here.
[0024] Working principle of the present utility model:
[0025] After the feeding at the transfer station 1 is completed, the light source 7 behind the transfer station 1 projects the image of the shape of the liquid crystal substrate glass of the incoming material at the transfer station 1 onto the curtain 4 in a positive projection manner. The CCD camera 3 at the top of the transfer station 1 captures the image shape of the liquid crystal substrate glass on the curtain 4. The processing unit of the CCD camera 3 identifies a rectangular area with a fixed shape specification and sets the four side lines of the rectangle as boundary lines. Once a shadow part appears outside the boundary lines of the rectangular area, an alarm signal is sent to the PLC controller. When the PLC receives the alarm signal, it is considered that the liquid crystal substrate glass of the incoming material at this station is a multi-sided product, and automatic board throwing can be performed at the board throwing station downstream of the transfer station 1, thereby completing the identification and screening of multi-sided products.
[0026] The above has elaborated in detail on the preferred embodiments of the present utility model, and it cannot be considered as used to limit the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model should still fall within the scope covered by the patent of the present utility model.
Claims
1. A liquid crystal substrate glass multilateral detection device, characterized in that: The invention comprises a conveying station (1) for conveying a liquid crystal substrate glass to be inspected, wherein a visual capture system is arranged on the top of the conveying station (1), a light projection mechanism is arranged behind the conveying station (1), and a projection receiving mechanism is arranged in front of the conveying station (1); the light projection mechanism projects a shape image of the liquid crystal substrate glass to be inspected on the conveying station (1) onto the projection receiving mechanism, and the visual capture system captures the shape image on the projection receiving mechanism.
2. A liquid crystal substrate glass multilateral detection device according to claim 1, characterized in that: The visual capture system comprises a special-shaped bracket (2) and a CCD camera (3), wherein the special-shaped bracket (2) is hung in the middle of the top of the conveying station (1), and the CCD camera (3) is installed on the special-shaped bracket (2), and the shooting end of the CCD camera (3) faces the projection receiving mechanism.
3. A liquid crystal substrate glass multilateral detection device according to claim 2, characterized in that: The projection receiving mechanism comprises a right-angle tripod (5) and a screen (4), wherein the right-angle tripod (5) is arranged in front of the transmission station (1), and the screen (4) is vertically laid on a side of the right-angle tripod (5), and the screen (4) is directly opposite to the transmission station (1).
4. A liquid crystal substrate glass multilateral detection device according to claim 3, characterized in that: The light projection mechanism comprises a light door frame (6) and a light source (7); the light door frame (6) is arranged behind the conveying station (1); the light source (7) is arranged on the light door frame (6); and the light from the light source (7) passes through the space of the conveying station (1) and is projected onto the curtain (4).
5. The liquid crystal substrate glass multilateral detection device according to claim 4, characterized in that: The light projection mechanism further comprises a voltage-stabilized power supply and a cooling fan, wherein the voltage-stabilized power supply is electrically connected to the light source (7), and the cooling fan is used to dissipate heat from the light source (7).
6. A liquid crystal substrate glass multilateral detection device according to claim 4, characterized in that: The light source (7) is a xenon lamp.
7. The liquid crystal substrate glass multilateral detection device according to claim 1, characterized in that: It also includes a PLC controller and an alarm, and the PLC controller is communicatively connected with the visual capture system and the alarm.